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How many factors are in each of the following designs?

1. A 2x2 design
2. A 3x2x2 design
3. A 3x3x3 design
4. A 2x2x2x2 design

Choose the correct answer:

a) 4; 6; 9; 16
b) 2; 4; 9; 8
c) 2; 6; 9; 16
d) 4; 8; 9; 16

Answer :

Final answer:

A 2x2 design has 4 fctors, aa 3x2x2 design has 6 factors, a 3x3x3 design has 9 factors, and a 2x2x2x2 design has 16 factors. So, the correct option is A.

Explanation:

A 2x2 design has 4 factors, a 3x2x2 design has 6 factors, a 3x3x3 design has 9 factors, and a 2x2x2x2 design has 16 factors.

For a 2x2 design, there are two factors, each with two levels. The number of factors can be determined by multiplying the number of levels of each factor. In this case, 2 x 2 = 4.

Similarly, for a 3x2x2 design, there are three factors with 2, 2, and 2 levels, respectively. So the number of factors is 3 x 2 x 2 = 6.

In a 3x3x3 design, each factor has 3 levels, resulting in a total of 3 x 3 x 3 = 9 factors.

Finally, for a 2x2x2x2 design, there are four factors, each with 2 levels. Thus, the number of factors is 2 x 2 x 2 x 2 = 16.

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